1.基于java线程的坦克大战小游戏 2.多重地图，多重关卡 3.利用文件读取改变地图属性，坦克属性等 4.利用绘图技术，重绘地图(1. tank war games based on Java threads 2. multiple maps, multiple levels 3. use file reads to change map attributes, tank properties, etc. 4. use drawing techniques to redraw ma